Owens Corning Fiberglass 634221 Installation guide

QuietR

Rotary Duct Liner

Installation Instructions

Product Applications/Installation

All portions of duct designated to receive QuietR

Rotary Duct Liner shall be completely covered with duct

liner, adhered to the sheet metal with 90% coverage of adhesive complying with ASTM C 916. Transverse

joints shall be neatly butted and there shall be no interruptions or gaps. All transverse joints shall be

edge-coated. Metal nosing on leading edges must be used where duct liner is preceded by unlined metal,

and on all upstream edges when velocity exceeds 4,000 fpm (20.3 m/s). The black mat faced surface of the

duct liner shall face the airstream. NOTE: 150’ rolls are rolled with the black mat to the outside.

QuietR

Rotary Duct Liner shall also be secured with mechanical fasteners, either impact-driven or

weld-secured, which shall compress the duct liner sufﬁ ciently to hold it ﬁ rmly in place. For fastener spacing,

see Figure 1.

Duct Liner shall be cut to assure overlapped and compressed longitudinal corner joints. For details, refer to

NAIMA Publication AH124, Fibrous Glass Duct Liner Standard.

Minor damage and small tears may be repaired by coating with adhesive – ASTM C916.

After installation, and prior to occupancy, blow out duct system to remove any cutting scraps or foreign

material remaining in the duct.

Multiple Layer Installation Instructions

Installing two layers of material to meet a speciﬁ c liner thickness is not recommended. If the speciﬁ cation

forces the use of multiple layers, the following steps must be taken:

1. Adhere bottom layer of duct liner to duct in normal manner.

2. Adhere top layer to bottom layer of liner using a minimum of 90% adhesive coverage.

3. Treat all leading edges with metal nosings to prevent separation of the two layers.

4. Use mechanical fasteners of the proper length for double layer.

Figure 1

This manual is also suitable for

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